A professional who tends equipment that grinds and sifts animal bones to form bonemeal and bone flour. Respnsibilities include:

• Starts grinder, shaker screens, and conveyors.
• Turns dials on control panel to synchronize feed of bones into grinder and ground bones into shaker screens that separate bonemeal and bone flour.
• Adjusts length of rocker arm on vibratory feeders and shaker screens to regulate oscillation speed, using wrenches, to maintain uninterrupted production.
• Observes ammeter on control panel to detect overloading.
• Monitors equipment to detect clogging and malfunctions.